In a little while [Gollum] stopped suddenly and sniffed the air doubtfully, hissing as if he was troubled or displeased again. "What is it?" growled Sam "What's the need to sniff? The stink nearly knocks me down with my nose held. You stink and master stinks, the whole place stinks!" "Yes, yes, and Sam stinks!" answered Gollum. "Poor Smèagol smells it, but good Smèagol bears it. Helps nice master. But that's no matter. The air's moving, change is coming. Smèagol wonders; he's not happy"